Former President Bill Clinton, who in 1996 signed into law an act defining marriage as between a man and woman, said on Thursday the measure was unconstitutional and should be overturned by the Supreme Court. … Noting that the Supreme Court will hear arguments on March 27 challenging the constitutionality of DOMA, Clinton wrote the justices “must decide whether it is consistent with the principles of a nation that honors freedom, equality and justice above all, and is therefore constitutional. As the president who signed the act into law, I have come to believe that DOMA is contrary to those...